« previous next »
« previous next »
 

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Overview of points of control for gene regulation in (a) prokaryotes and (b) eukaryotes Overview of points of control for gene regulation in (a) prokaryotes and (b) eukaryotes
Homeostatic Control Mechanisms Homeostatic Control Mechanisms
Control of transcription of a flagellar protein operon by a riboswitch for the regulatory nucleotide Control of transcription of a flagellar protein operon by a riboswitch for the regulatory nucleotide
Feedback control of adrenal cortex Feedback control of adrenal cortex
How does PCA reduce the dimension of a statistical problem? How do you select the reduced ... How does PCA reduce the dimension of a statistical problem? How do you select the reduced ...
Regions involved in the control of genetic expression of the lac operon Regions involved in the control of genetic expression of the lac operon
Video: Type of Transport - Active and Passive Processes

For a complete list of videos, visit our video library